The Loma Verde trail in the Saguaro National Park. Specific destination, a defunct copper mine, one mile from the trail head. But I misread a sign and ended up at Pink Hill Lookout.
Not a bad view, actually.
Just as far to push on as go back. I found the mine and some copper ore on my way back. The day was cool but dry.
A four mile loop. Glad I brought plenty of water.